1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18 package org.apache.commons.jxpath.ri.compiler;
19
20 import org.apache.commons.jxpath.ri.EvalContext;
21 import org.apache.commons.jxpath.ri.InfoSetUtil;
22
23 /**
24 * Implementation of {@link Expression} for the operation "mod".
25 */
26 public class CoreOperationMod extends CoreOperation {
27
28 /**
29 * Constructs a new CoreOperationMod.
30 *
31 * @param arg1 dividend
32 * @param arg2 divisor
33 */
34 public CoreOperationMod(final Expression arg1, final Expression arg2) {
35 super(new Expression[] { arg1, arg2 });
36 }
37
38 @Override
39 public Object computeValue(final EvalContext context) {
40 final long l = (long) InfoSetUtil.doubleValue(args[0].computeValue(context));
41 final long r = (long) InfoSetUtil.doubleValue(args[1].computeValue(context));
42 return Double.valueOf(l % r);
43 }
44
45 @Override
46 protected int getPrecedence() {
47 return MULTIPLY_PRECEDENCE;
48 }
49
50 @Override
51 public String getSymbol() {
52 return "mod";
53 }
54
55 @Override
56 protected boolean isSymmetric() {
57 return false;
58 }
59 }